Reaching one million sales of a single in the UK is one of the greatest and rarest pop music milestones; and for the first time the Official Charts Company is redefining the established milestone to include streams.This major change in chart history means the exclusive UK ‘Million Sellers Club’ opens its doors to showcase the mega hits coming through in the 21st Century - a selection of which are featured on a newly announced album Now That’s What I Call a Million.